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Millermatic 211 issue

11-11-2012, 08:55 PM

IF you look at the pic I posted you can tell there is an issue. Im using the machine in 220, and cannot get it set correctly, its like the arc is erratic and not concentrated at the tip of the wire. When in the puddle the arc seems to be drifting. Its creating a lot of spatter and awful beads. Now when i use it on 110 everything is the way its suppose to be, I can dial it in perfectly and I get great results. I am relatively new to welding, and this is the first 220 welder i have owned, my first was the mm140 which i layed down some great beads with. My question is is it me or the machine, or another culprit? Also i wish i knew the volts and ipm instead of the numbers provided so i could be more precise.

Comment

Im using C25 gas and 70s6 .035" size wire. My metal was clean so thats not the issue, all though the picture doesnt look that way. The edges of the weld are so inconsistent and just plain bad. It doesnt feel, sound or obviously look right. I cant send welds out of my shop that someone has paid for that look like this. When im on 110 I have no issues at all. I build cattle gates and home gates and the welds are right in the customers face.

Comment

I have read that the arc is harsh when on 220 but the way its welding cant be the way it was designed to perform. Should I try calling support? I will say i am running it on a 30 amp breaker that has a dryer plug socket, i made an extension cord to adapt to the 6-50 that's on the machine. I dont know if there's anything that could cause these issues from that set up but thought i would mention. An electrician is coming and wiring up a new panel in the shop this week, so maybe the issue will resolve itself..hahaha doubt it!

Comment

I have read that the arc is harsh when on 220 but the way its welding cant be the way it was designed to perform. Should I try calling support? I will say i am running it on a 30 amp breaker that has a dryer plug socket, i made an extension cord to adapt to the 6-50 that's on the machine. I dont know if there's anything that could cause these issues from that set up but thought i would mention. An electrician is coming and wiring up a new panel in the shop this week, so maybe the issue will resolve itself..hahaha doubt it!

Comment

I mean is that really possible? Its basically 2 hots and a ground the voltage doesnt care what color the wires are, right? I mean i wouldnt be getting the difference in power if the voltage wasnt different. IDK, ijust want a definitive answer voltage or machine or operator.

Comment

I mean is that really possible? Its basically 2 hots and a ground the voltage doesnt care what color the wires are, right? I mean i wouldnt be getting the difference in power if the voltage wasnt different. IDK, ijust want a definitive answer voltage or machine or operator.

The MM211 will run on 208v just fine, I've done it.

Can't hurt to check the ext. cord wiring.

And it could be a bad machine. As I mentioned earlier yours is not the first case of a 211 not working properly on 240v but working on 120v.

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I realize that I have to prove myself here all the time. On the other hand it is reassuring to find that I am not always wrong:

Electrical Hadbook:

In some multiple-unit residential buildings of North America, three-phase power is supplied to the building but individual units have only single-phase power formed from two of the three supply phases. Lighting and convenience receptacles are connected from either phase conductor to neutral, giving the usual 120 V required by typical North American appliances. In the split-phase system, high-power loads are connected between the opposite "hot" poles, giving a voltage of 240 V. In some cases, they may be connected between phases of a three-phase system, giving a voltage of 208 V. This practice is common enough that 208 V single-phase equipment is readily available in North America. Attempts to use the more common 120/240 V equipment intended for split-phase distribution may result in poor performance since 240 V heating and lighting equipment will only produce 75% of its rating when operated at 208 V. Motors rated at 240 V will draw higher current at 208 V; some motors are dual-labelled for both voltages.